Sign Up for Our Amazing Newsletter!
A daily update by email. Science news, great photos, sky alerts.
Your email address will only be used for EarthSky content.
Privacy Policy
Thank you! Your submission has been received!
Oops! Something went wrong while submitting the form.
EarthSky
One Earth. One Sky. EarthSky.
Tonight
Space
Sun
Earth
Human
Best Places to Stargaze
EarthSky Community Photos
About
Store
Donate
Contact Us
Subscribe
Tonight
Tonight
Brightest Stars
Astronomy Essentials
Moon Phases
Clusters Nebulae Galaxies
Favorite Star Patterns
Constellations
Brightest Stars
Meet Regulus, Leo the Lion’s Heart and brightest star
Larry Sessions
May 22, 2026
Astronomy Essentials
Tonight
Visible planets and night sky guide for May
Marcy Curran
May 22, 2026
Astronomy Essentials
Constellations and signs: What’s the difference?
Guy Ottewell
May 20, 2026
Space
Sun
Earth
Human
Human
Spaceflight
Best Places to Stargaze
Community Photos
View Community Photos
Trending
Submit a Photo
About
Store
Donate
Happy Friday the 13th: It’s the 2nd one in 2023
Bruce McClure
September 13, 2023
min read
Why love really is a drug
Editors of EarthSky
February 14, 2023
min read
Sputnik launched 65 years ago
Eleanor Imster
Deborah Byrd
October 4, 2022
min read
Maarten Schmidt, father of quasars, dies at 92
Deborah Byrd
September 24, 2022
min read
Voyager 2 launched 45 years ago
Deborah Byrd
Elizabeth Howell
August 20, 2022
min read
February 18, 1930: Clyde Tombaugh discovers Pluto
Editors of EarthSky
February 18, 2022
min read
Sweden went 1st in banning aerosol sprays on January 23, 1978
Deborah Byrd
David Portree
January 23, 2022
min read
No leap second for December 31, 2021
Larry Sessions
December 31, 2021
min read
Surtsey, volcanic island, emerged in 1963
Deborah Byrd
Shireen Gonzaga
November 14, 2021
min read
What is time, and why does it move forward?
EarthSky Voices
September 19, 2021
min read
Previous
2 / 291
Next
Tags
Weather
Videos
Video
No items found.